How OpenAI Scales PostgreSQL to 800 Million Users
Practical database scaling lessons from the team behind ChatGPT
System Design Cheat Sheet: Concepts Every Developer Should Know
The practical reference guide for building scalable, reliable systems
How Google Docs Works Behind the Scenes
How Google Docs syncs edits from millions of users typing at the same time without losing a single character
How Meta Handles Millions of Serverless Function Calls Per Second
Inside XFaaS: The platform processing trillions of function calls daily across 100,000+ servers
Breaking Down X's Open Source Algorithm
A deep dive into the open source recommendation system powering one of the world's largest social platforms
How Snowflake IDs Work
How Twitter, Discord, and Instagram generate billions of unique IDs without a central database
CQRS Pattern: Splitting Read and Write Models
Separate your reads from writes and stop fighting with your database
How Google Ads Supports 4.8 Billion Users with a SQL Database
Inside Google Spanner, the database that broke the rules of distributed systems
Role of Queues in System Design
How message queues help build scalable, resilient systems that don't fall apart under pressure
How Amazon S3 Stores 100 Trillion Objects Without Losing One
Inside the distributed storage system that powers Netflix, Airbnb, and most of the internet
Modular Monolith: The Architecture Most Teams Actually Need
Why microservices might be overkill and how to build systems that actually scale
The Complete Guide to Server-Sent Events (SSE)
The overlooked middle ground between polling and WebSockets
Long Polling Explained: Build Real-Time Apps Without WebSockets
The battle-tested technique that powers notifications when persistent connections fail
How Stock Brokers Push 1 Million Price Updates Per Second to Your Screen
The engineering behind real-time stock prices that move faster than you can blink
Stop Blocking Your Paying Customers: Build a Smart Rate Limiter
How to protect your API without blocking legitimate users
How Shopify Powers 5 Million Stores Without Breaking a Sweat
Inside the architecture that handles Black Friday at massive scale
What Actually Happens When You Type a URL
From browser to backend server - the complete journey of a DNS request, with performance tricks and production insights
How Ticket Booking Systems Handle 50,000 People Fighting for One Seat
Inside the architecture that powers BookMyShow, Ticketmaster, and what happened during the Taylor Swift meltdown
Kubernetes Architecture: The Operating System for the Cloud
How Google's container orchestrator became the backbone of modern software deployment
How Meta Achieves 99.99999999% Cache Consistency
Inside the architecture that keeps 3 billion users in sync
How Slack Built a System That Handles 10+ Billion Messages
Inside the architecture that powers real-time communication for millions
Distributed Counter System Design
From simple incrementers to battle-tested architectures that handle millions of operations
How Stripe Prevents Double Payments With Idempotency Keys
The engineering patterns behind Stripe's payment reliability and how to implement them in your systems
55 Million Requests Per Second: Inside Cloudflare's Magic
Deep dive into Cloudflare's technical architecture - how 15 PostgreSQL clusters, ClickHouse, and Quicksilver work together to handle 55 million requests per second with millisecond latency.
How Uber Finds Nearby Drivers at 1 Million Requests per Second
How does Uber find nearby drivers? Learn how Uber's system for finding you nearby drivers works at 1M+ requests per second using H3 hexagonal grids, geospatial indexing, and real-time matching....
How WhatsApp Scaled to Billions of Users with Just 50 Engineers
The architecture decisions that made massive scale possible
